Slippers for Bridesmaids

I just went to payless and saw a pair of dyables wedding slippers. I am getting a pair for myself for the wedding reception, but i was hoping to get them for my bridesmaids....however the pair in Payless was $37!!! WHen regular shoes were $20.

Does anyone know a good place to get cheap slippers that i can dye......
Thanks

There are no walmarts by me